ArticleViruses2026
Mutations at Positions 181 and 185 Within the LCMV GP Protein Increase Tumor Cell Infectivity, Limit Induction of Type I Interferon, and Accelerate T Cell Activation.
Article in Viruses, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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13 authors.
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Abstract
The lymphocytic choriomeningitis virus (LCMV) represents a strong T cell activating virus with anti-tumoral properties. In recent work, we developed an attenuated cancer cell-adapted reassortant LCMV strain carrying tumor-tropic mutations. The immunological mechanisms underlying these mutations remained unknown. Here, we passaged wild-type LCMV-WE in human lung cancer H1975 cells for 52 passages. After 29 passages, the virus acquired the GP1 mutations I181M and R185W, involved in viral receptor interactions, which remained stable throughout the subsequent 33 passages. Compared with wild-type LCMV-WE, LCMV-P52 showed increased infectivity, partly concomitant with enhanced propagation in human tumor cells. In vivo, LCMV-P52 induced reduced type I interferon (IFN-I) responses and showed accelerated expansion in CD169
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